in not given prepd. by the alcohol-exchange procedure described by Singh, J. V.; Baranwal, B. P.; Mehrotra, R. C.; T. Anorg. Allg. Chem. 1981, 477, 235; sublimation;

in neat (no solvent) pyrolysis at ambient pressure under N2 stream (25-300°C, 2 h); ratio Cu : CuO : Cu2O = 48 : 33 :19; detd. by X-ray powder diffraction;